Collaborator supports the client versions starting from MKS Source 2007 and later (MKS Source and MKS Integrity are former names of PTC Source and PTC Integrity). MKS 2006 clients with the latest fix packs are also supported.
On Windows operating systems, Collaborator's integration modules require 32-bit Java Runtime Environment. 64-bit JRE is not supported at the moment.
The problem was solved. The PTC Integrity Client 11.0 was not installed correctly
When the environment variable below is set, everything is fine !